Google "Aspartame" and you get "toxic diet soda"
 

Go to Google and search for aspartame, a toxic substance found in many
articificial sweeteners and diet sodas such as Diet Coke, Diet Pepsi,
and Diet Mountain Dew. It will make you feel depressed, gain weight,
have excessive urges to overeat and drink, and decrease your sexual
performance, among other things. After freezing, aspartame chemically
converts to formaldehyde! The stuff they use on frogs! Boycott
Coca-Cola and Pepsi-Cola for introducing us to such harmful products!